Glaxo Smith Kline
GlaxoSmithKline
Data as of 2026-08-09
Registry
Cluster stats
| Netblocks | 50 · 745,780 IPv4 addresses |
| IPv6 | 3 prefixes (largest 2620:0:be0::/48) |
| Registered in | United States (31) · United Kingdom (4) · France (3) · Israel (2) · Serbia (1) · Russia (1) |
| All fragments | 62 blocks across 5 clusters |
| Cluster ID | 217935463 |
| Registry | APNIC |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | Registry record |
| Shared handles | clustered on 27 shared RIR contact/maintainer handles |
| Registry names | 8 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
7 weekly snapshots · JSON
50
+17 netblocks since 2026-07-05
2026-07-05
peak 50
2026-08-09
IP Ranges (50)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 130.23.0.0/16 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 130.23.244.0/24 | GlaxoSmithKline | BGP | ANNOUNCED | ● high |
| 130.23.248.0/24 | GlaxoSmithKline | BGP | ANNOUNCED | ● high |
| 139.136.0.0/16 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 143.193.0.0/16 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 145.240.6.0/23 | GlaxoSmithKline | BGP | ANNOUNCED | ● high |
| 145.240.94.0/24 | GlaxoSmithKline | BGP | ANNOUNCED | ● high |
| 152.51.0.0/16 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 152.51.24.0/24 | GlaxoSmithKline | BGP | ANNOUNCED | ● high |
| 152.51.27.0/24 | GlaxoSmithKline | BGP | ANNOUNCED | ● high |
| 152.51.48.0/24 | GlaxoSmithKline | BGP | ANNOUNCED | ● high |
| 152.51.56.0/24 | GlaxoSmithKline | BGP | ANNOUNCED | ● high |
| 166.71.0.0/16 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.5.237.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.6.210.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.30.61.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.30.200.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.46.157.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.55.202.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.56.36.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.56.74.0/23 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.58.204.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.58.205.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.81.190.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.154.91.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.154.92.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 192.154.93.0/24 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 198.22.70.0 – 198.22.75.255 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 198.28.64.0/18 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 198.28.69.0/24 | GlaxoSmithKline | BGP | ANNOUNCED | ● high |
| 198.28.92.0/24 | GlaxoSmithKline | BGP | ANNOUNCED | ● high |
| 199.28.0.0/16 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 199.43.226.0 – 199.43.237.255 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 2620:0:be0::/48 | GlaxoSmithKline | ARIN | DIRECT ALLOCATION | ● high |
| 80.179.225.176/30 | GlaxoSmithKline-Ltd | RIPE | ASSIGNED PA | ● low |
| 82.204.191.136/30 | GlaxoSmithKline | RIPE | ASSIGNED PA | ● low |
| 85.62.1.124/30 | GLAXOSMITHKLINE | RIPE | ASSIGNED PA | ● low |
| 85.90.238.4/30 | GLAXOSMITHKLINE | RIPE | ASSIGNED PA | ● low |
| 91.82.117.76/30 | GLAXOSMITHKLINE | RIPE | ASSIGNED PA | ● low |
| 145.240.0.0/16 | GLAXOSMITHKLINE | RIPE | LEGACY | ● low |
| 147.184.0.0/16 | GLAXOSMITHKLINE | RIPE | LEGACY | ● low |
| 159.30.0.0/16 | GLAXOSMITHKLINE | RIPE | LEGACY | ● low |
| 159.114.0.0/16 | GLAXOSMITHKLINE | RIPE | LEGACY | ● low |
| 161.147.0.0/16 | GLAXOSMITHKLINE | RIPE | LEGACY | ● low |
| 192.116.244.72/29 | GlaxoSmithKline | RIPE | ASSIGNED PA | ● low |
| 195.50.64.32/30 | GLAXOSMITHKLINE | RIPE | ASSIGNED PA | ● low |
| 202.79.215.28/30 | GlaxoSmithKline | APNIC | ALLOCATED NON-PORTABLE | ● low |
| 213.240.36.160/28 | GLAXOSMITHKLINE-NET | RIPE | ASSIGNED PA | ● low |
| 2001:4d78:104:d2::/64 | GLAXOSMITHKLINE | RIPE | ASSIGNED | ● low |
| 2a00:2381:e675::/48 | GLAXOSMITHKLINE-PLC | RIPE | AGGREGATED-BY-LIR | ● low |
IPv6 ranges (3)
Network trust
what's this?
RPKI hygiene: F
how networks compare →
18.0%
of checked blocks have valid RPKI ROA coverage
(9 of 50)
Possible discrepancies (1)
These blocks are registered to GlaxoSmithKline but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2a00:2381:e675::/48 /48 | authorized for AS2856 — British Telecommunications Limited |
NIC Handles
AE131-AP
AG545-AP
AG545-AP
AS12301-MNT
AS14306
AS2539
AS3902
AS5635
AS824
AS8771-MNT
AS9116-MNT
BTNET-MNT
+15 more